From: Kaffirskop
This Prisoner of War record for Robert Crowther Pienaar was transcribed record from various documents held at the National Archives, South Africa, including arrest and shipping information from newspaper sources like De Zuid-Afrikaan.
https://www.gendatabase.com/boer-war-prisoner-record.php?q=13312&r=Robert Crowther&s=Pienaar&ref=
This set of Prisoner of War documents can be accessed online via the FamilySearch.org project by Clicking Here.